Emissions Working Group

The purpose of this Working Group is to provide a forum to discuss current and new developments in GEOS-Chem associated with land-atmosphere and ocean-atmosphere sources, sinks, and fluxes of trace gases and aerosols.

All users interested in adding/updating the GEOS-Chem emissions inventories are encouraged to subscribe to the emissions email list (click on the link in the contact information section below).

Primary Working Group Contacts

Sources and Surface Uptake Working Group Co-Chairs	Jintai Lin and Qiang Zhang
Sources and Surface Uptake Working Group email list	geos-chem-emissions [at] g.harvard.edu
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--Bob Y. (talk) 18:35, 21 August 2015 (UTC)

Who's doing what and where? [Current GEOS-Chem Research Projects on Sources and Sinks]

User Group	Description	Contact Person	Date Added
Dalhousie	Top-down constraints on surface NOx emissions	Matthew Cooper	27 April 2011
Harvard	Methane sources in the Arctic	Christopher Pickett-Heaps
Harvard	Mechanistic Lightning Parameterization	Lee Murray
JPL	Comparison of adjoint and mass balance for NOx emissions	Changsub Shim
U. East Anglia	COS Emissions	Parvadha Suntharalingam
U. Edinburgh	Biogenic VOC emissions from tropical ecosystems	Michael Barkley
U. Edinburgh	Regional methane sources using surface in situ and GOSAT and IASI satellite observations and an ensemble Kalman filter	Annemarie Fraser
U. Edinburgh	Quantifying the impact of boreal biomass burning emissions on tropospheric oxidant chemistry	Mark Parrington
U. Eindhoven	Constraining ship emissions using OMI NO2 observations / Soil NOx emissions	Geert Vinken	21 June 2012
U. Toronto / Env Canada	CO2 sources and sinks (fossil fuels including shipping/aviation, biosphere, ocean, etc.)	Ray Nassar
U. Toronto	Adjoint analysis of CO sources from MOPITT	Zhe Jiang
Peking University	Top-down constraints on Asia VOCs	May Fu
Peking University	Air-sea exchange and top-down constraints on global acetone	May Fu	29 April 2011
CSU	IASI constraints on NHx	Colette Heald
Tsinghua University	Bottom-up/top-down anthropogenic inventory over East Asia	Qiang Zhang
CU Boulder	Top-down constraints on NH3	Juliet Zhu
US EPA	Top-down constraints on NO2	Havala Pye
U. Nebraska Lincoln	Top-down constraints on aerosols over Asia using MODIS	Richard Zu
Peking University	Natural sources (soil, lightning, bb) of NOx over China: top-down vs bottom-up	Jintai Lin	01 Nov 2010
UW	Snow NOx source in Greenland and Antarctica	Becky Alexander	07 May 2015

Ongoing GEOS-Chem Developments Related to Sources and Sinks (please add yours!)

Here is the list of updates that are slated to be added to GEOS-Chem in the next few releases:

Update	Authors	Planned release
HEMCO emissions component	Christoph Keller (Harvard)	Implemented into GEOS-Chem v10-01, updated as needed
MEGAN biogenic emissions	Michael Barkley (Leicester)	Updates ongoing
Australian anthropogenic emissions	Jenny Fisher (Wollongong)	Updates ongoing

--Bob Y. 18:55, 14 January 2015 (EST)

Recent GEOS-Chem Updates Related to Sources and Sinks

We have added the following updates pertaining to sources and sinks to recent GEOS-Chem versions:

Version	Released	Description	Contact
v11-01	Jan 2017	Update HEMCO to version 2.0.003	Christoph Keller (NASA GSFC)
v11-01	Jan 2017	0.1° x 0.1° CAC emissions	Aaron van Donkelaar (Dalhousie)
v11-01	Jan 2017	Replace RETRO C3H8 emissions with emissions from Xiao et al. (2008)	Emily Fischer (CSU) Zitely Tzompa (CSU)
v11-01	Jan 2017	Add option for QFED & FINN emissions in the Hg simulations	Jenny Fisher (Wollongong)
v11-01	Jan 2017	CO2 direct effect on isoprene emissions	Amos Tai (CUHK)
v11-01	Jan 2017	Update biomass burning emissions to GFED4.1, includes: Daily and diurnal factors	Prasad Kasibhatla (Duke) Christoph Keller (Harvard)
v10-01	Jun 2015	The HEMCO emissions component now handles all GEOS-Chem emissions.	Christoph Keller (Harvard) GCST
v10-01	Jun 2015	Daily anthropogenic emissions broken down by sector from the EPA NEI2008 inventory (via HEMCO)	Katie Travis (Harvard)
v10-01	Jun 2015	FINNv1 biomass burning emissions (via HEMCO)	Jenny Fisher (Wollongong) Min Huang (JPL)
v10-01	Jun 2015	MEGAN v2.1 plus Guenther 2012 biogenic emissions (via HEMCO)	Dylan Millet (Minnesota)
v9-02	Mar 2014	New soil NOx emission module	Rynda Hudman Kay (EPA) Neil Moore (formerly of Dalhousie) Bram Maasakkers (Harvard)
v9-02	Mar 2014	EPA/NEI05 North American Hg emissions	Yanxu Zhang (U. Washington) Lyatt Jaeglé (U. Washington)
v9-02	Mar 2014	Hg anthropogenic emissions options for the year 2006 or 2050 following SRES scenarios A1B, A2, B1, and B2 from Streets et al. 2009.	Bess Corbitt (Harvard)
v9-02	Mar 2014	Updated NH3 seasonal scaling factors over the US	Lin Zhang (PKU)
v9-02	Mar 2014	Updated Canadian NH3 inventory	Wai-Ho Lo (Dalhousie)
v9-02	Mar 2014	Bug in wet deposition Henry's constant	Fabien Paulot (Harvard)
v9-02	Mar 2014	Fix diurnal NOx scale factors and fix double counting of biofuels over Mexico, Canada, and Europe	Christoph Keller (Harvard)
v9-02	Mar 2014	Correct bugs in ship emissions w/ non-local PBL mixing	Chris Holmes (UC Irvine)
v9-02	Mar 2014	Bug fixes in day-of-week computation	GEOS-Chem Support Team
v9-02	Mar 2014	RCP future emission scenarios	Chris Holmes (UC Irvine)
v9-02	Mar 2014	EDGAR v4.2 emissions for CH4 simulation	Kevin Wecht (Harvard)
v9-02	Mar 2014	Update anthropogenic scale factors through 2010	Aaron van Donkelaar (Dalhoisie)
v9-02	Mar 2014	Update GFED3 emissions to 2011	Prasad Kasibhatla (Duke)
v9-02	Mar 2014	AEIC aircraft emissions inventory	Sebastian Eastham (MIT) Steven Barrett (MIT)
v9-02	Mar 2014	Fix molecular weights of RIP and IEPOX used in drydep_mod.F	GEOS-Chem Support Team
v9-02	Mar 2014	Bug fix for NEI2005 SO4 emissions in sulfate_mod.F	Jenny Fisher (U. Wollongong)
v9-01-03	Sep 2012	Improved acetone simulation	Emily Fischer (Harvard)
v9-01-03	Sep 2012	Complete shift of biogenic VOC emissions from GEIA to MEGAN; retire GEIA	Dylan Millet
v9-01-03	Sep 2012	OVOC's dry deposition	Jingqiu Mao (NOAA/GFDL)
v9-01-03	Sep 2012	Historical emission inventories of SO2, NOx, BC, and POA	Eric Leibensperger (MIT)
v9-01-03	Sep 2012	PARANOX model for evolution of ship exhaust plumes	Geert Vinken (Eindhoven)
v9-01-03	Sep 2012	Improved snow scavenging and washout parameterization	Qiaoqiao Wang (Harvard)
v9-01-03	Sep 2012	Constraining the lightning NOx source with satellite data	Lee Murray (Harvard)
v9-01-03	Sep 2012	MAP_A2A algorithm to regrid emissions on the fly	Prasad Kasibhatla (Duke) Matt Cooper (Dalhousie)
v9-01-03	Sep 2012	Anthropogenic NOx scaling factors from OMI	Lok Lamsal (NASA) Matt Cooper (Dalhousie)
v9-01-02	Nov 2011	GEIA 2005 Hg emissions	Bess Corbitt (Harvard) Noelle Selin (MIT)
v9-01-02	Nov 2011	Bug fix for biofuel emissions when using EPA/NEI05	GEOS-Chem Support Team
v9-01-02	Nov 2011	Update to GFED3 biomass burning	Prasad Kasibhatla (Duke)
v9-01-02	Nov 2011	Anthropogenic VOCs	Dylan Millet (UMN)
v9-01-02	Nov 2011	Added seasonality to Streets NH3 emissions over Asia	Jenny Fisher (Harvard)
v9-01-01	May 2011	Updated Hg simulation	Bess Corbitt (Harvard) Jenny Fisher (Harvard) Helen Amos (Harvard)
v9-01-01	May 2011	Bug fix for biofuel emissions when using EPA/NEI05	GEOS-Chem Support Team
v9-01-01	May 2011	Bug fixes for ship emissions and EMEP ship emissions mask file	GEOS-Chem Support Team
v9-01-01	May 2011	Updated lightning parameterization and fix for cloud-top-height algorithm	L. Murray, Harvard
v9-01-01	May 2011	Updated volcanic SO2 emissions from Aerocom	J. Fisher (Harvard)
v9-01-01	May 2011	Updated wet scavenging and convective updraft scavenging algorithms and Allow both washout and rainout when precipitation forms	H. Amos (Harvard) Bess Corbitt (Harvard) Q. Wang (Harvard)
v8-03-02	Sep 2010	Updated CO2 Emissions	R. Nassar, Environment Canada
v8-03-01	May 2010	Extension of annual anthropogenic scale factors to 2006	A. van Donkelaar, Dalhousie
v8-03-01	May 2010	EMEP emissions extended to 2007 and seasonality extended to SOx, CO, and NH3	A. van Donkelaar, Dalhousie
v8-03-01	May 2010	Emissions for Nested NA/EU Simulations Nested Grid	A. van Donkelaar, Dalhousie
v8-03-01	May 2010	Emissions for Global 1 x 1.25 simulation capability	L. Lamsal, Dalhousie
v8-03-01	May 2010	Speciated biogenic emissions from MEGAN v2.1 now used in SOA code	H. Pye, Caltech
v8-02-04	Feb 2010	EPA/NEI2005 regional emissions inventory for North America	P. Le Sager (formerly Harvard), A. van Donkelaar (Dalhousie)
v8-02-04	Feb 2010	MEGAN v2.1 biogenic emissions	Mike Barkley, Edinburgh
v8-02-04	Feb 2010	Updated inventory of volcanic SO2 emissions from AeroCom	Jenny Fisher, Harvard
v8-02-03	Oct 2009	ICOADS ship emissions	Chulkyu Lee, Dalhousie
v8-02-03	Oct 2009	Updated OTD/LIS redistribution factors for GEOS-5	Lee Murray, Harvard
v8-02-02	Jun 2009	BOND inventory for BC and OC with monthly variations	Eric Leibensperger, Harvard

--Melissa Sulprizio 10:43, 17 January 2014 (EST)

Discussions Related to Sources and Sinks (please add!)

1. Scale factors for anthropogenic emissions
2. GEIA Anthropogenic Scaling Factors
3. Biogenic Parameter Input Sources

Isoprene Emission Estimates in the Literature

Recent Papers

Evaluation of the global oceanic isoprene source and its impacts on marine organic carbon aerosol. Arnold SR, Spracklen DV, Williams J, Yassaa N, Sciare J, Bonsang B, Gros V, Peeken I, Lewis AC, Alvain S, Moulin C. ATMOSPHERIC CHEMISTRY AND PHYSICS, Volume: 9, Issue: 4, Pages: 1253-1262, Published: 2009. We have combined the first satellite maps of the global distribution of phytoplankton functional type and new measurements of phytoplankton-specific isoprene productivities, with available remote marine isoprene observations and a global model, to evaluate our understanding of the marine isoprene source and its impacts on organic aerosol abundances. Using satellite products to scale up data on phytoplankton-specific isoprene productivity to the global oceans, we infer a mean "bottom-up" oceanic isoprene emission of 0.31 +/- 0.08 (1 sigma) Tg/yr. By minimising the mean bias between the model and isoprene observations in the marine atmosphere remote from the continents, we produce a "top-down" oceanic isoprene source estimate of 1.9 Tg/yr. We suggest our reliance on limited atmospheric isoprene data, difficulties in simulating in-situ isoprene production rates in laboratory phytoplankton cultures, and limited knowledge of isoprene production mechanisms across the broad range of phytoplankton communities in the oceans under different environmental conditions as contributors to this difference between the two estimates. Inclusion of secondary organic aerosol (SOA) production from oceanic isoprene in the model with a 2% yield produces small contributions (0.01-1.4%) to observed organic carbon (OC) aerosol mass at three remote marine sites in the Northern and Southern Hemispheres. Based on these findings we suggest an insignificant role for isoprene in modulating remote marine aerosol abundances, giving further support to a recently postulated primary OC source in the remote marine atmosphere.

For current discussions of isoprene oxidation in the literature, please see our Isoprene: Recent Papers page.

Available Historical and Future Emissions

Please visit our Historical and Future Emissions wiki page for the latest information about the historical and future emissions, including any bug fixes or updates.

--Melissa Payer 15:53, 9 January 2013 (EST)